双峰聚乙烯/PA6共混体系的结晶行为和力学性能  

Crystallization Behavior and Mechanical Properties of Bimodal Polyethylene/PA6 Blends

作　　者：袁园[1] 丁雪佳[1] 张德强[1] 褚文娟[1] 张丽娟[1] 韩海军[1] 

机构地区：[1]北京化工大学北京市新型高分子材料制备与加工重点实验室,北京100029

出　　处：《塑料工业》2010年第8期18-21,共4页China Plastics Industry

基　　金：科技部科技人员服务企业行动项目(2009GJA1004508)

摘　　要：以高密度聚乙烯接枝马来酸酐(HDPE-g-MAH)作为相容剂,采用熔融挤出法制备双峰高密度聚乙烯/尼龙6(PE100/PA6)共混物。通过广角X射线衍射和偏光显微镜研究了PA6用量对PE100结晶行为的影响,同时也考查了PA6对PE100力学性能的影响。结果表明,PA6的加入,阻碍了PE100的结晶,使结晶度降低,同时又限制了球晶的生长,使晶粒细化。所以PA6的加入使PE100的拉伸强度降低,冲击强度增加。Bimodal high density polyethylene/polyamide 6（PE100/PA6）was prepared by means of melting extrusion with high density polyethylene grafted maleic anhydride（HDPE-g-MAH）as compatibilizer.The effects of the content of PA6 on crystallization behavior and mechanical properties of PE100 were studied by WAXD and POM.The results showed that the addition of PA6 decreased crystallization and crystallinity degree of PE100 and limited the growth of the spherulite size,which made the grain became less tiny.So the tensile strength of PE100 fell and the impact strength enhanced.

关 键 词：双峰聚乙烯 尼龙6 结晶行为 力学性能 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]